Make certain your spare tire and jack are secure.
For testing purposes, leave them at home for a test drive.
Check exhaust system clearances. A few points are close enough to frame members to make contact if the hangars are worn or stretched.
If you think it still might be swaybar related, remove one of the endlinks for a test drive. Just don't go crazy in turns since you'll have removed the anti-roll stabilization from the rear of the car.
Try to see if you can pinpoint which side it's coming from.
Steve
